Function validate_package_names 

pub fn validate_package_names(
    names: &[&str],
    config: Option<&ValidationConfig>,
) -> Result<()>

What: Validate multiple package names.

Inputs:

• names: Slice of package names to validate
• config: Optional validation configuration (uses defaults if None)

Output:

• Result<()> indicating success, or the first validation error encountered

Details:

• Validates each package name in the slice
• Returns the first error encountered, or Ok(()) if all are valid
• In strict mode, empty slice returns an error; in lenient mode, it’s allowed

Errors

• Returns Err(ArchToolkitError::EmptyInput) if names slice is empty and strict mode is enabled
• Returns Err(ArchToolkitError::InvalidPackageName) for the first invalid package name
• Returns Err(ArchToolkitError::InputTooLong) for the first package name exceeding maximum length